Mendocino County, CA

357 public highway bridges

Mendocino County Bridge Snapshot

Mendocino County, California contains 357 public highway bridges in the FHWA National Bridge Inventory. Roughly 32.2% are rated “Good,” 51.8% “Fair,” 7.3% “Poor,” and 7.3% are classified as structurally deficient — the federal designation for spans whose deck, superstructure, or substructure has been rated 4 or below on the 0–9 NBI scale. Structurally deficient does not mean unsafe to cross; it means the bridge is on the priority list for repair or replacement.

Inspections in CA are conducted by certified engineers from the state Department of Transportation on a 24-month cycle, and results are reported back to the FHWA each spring. The list below shows every NBI-tracked bridge in the county, sorted by inventory load rating. Use the “Sort by” controls to surface the lowest-rated spans first, and click any row for full inspection history, traffic counts, and condition trends.

Source: FHWA National Bridge Inventory. See methodology for full definitions.

357
Total Bridges
32.2%
Good
7.3%
Poor
7.3%
Structurally Deficient

Condition Distribution

Good
32.2% (115)
Fair
51.8% (185)
Poor
7.3% (26)
SD
7.3% (26)

All Bridges (357)

MOUNTAIN HOUSE RD

Fair

Over: CUMMISKEY CREEK

2.2 MI N SR 128, Mendocino, CA

Built 1913 Load: 18.8 t ADT: 1,252

RG STATE PARK ROAD

Fair

Over: RUSSIAN GULCH

RUSSIAN GULCH STATE PARK, Mendocino, CA

Built 1953 Load: 18.8 t ADT: 15,000

RIDGEWAY HWY CR249

Fair

Over: WHITNEY CREEK

4.4 MI N JCT EEL RIVER RD, Mendocino, CA

Built 1960 Load: 19.1 t ADT: 68

STATE ROUTE 1

Fair

Over: GARCIA RIVER

01-MEN-001-18.50, Mendocino, CA

Built 1938 Load: 19.4 t ADT: 2,100

DOS RIOS RD

Fair

Over: EEL RIVER & NCRRA (NWP)

0.5 MI NW OF SR 162, Mendocino, CA

Built 1966 Load: 19.4 t ADT: 143

USAL ROAD

Fair

Over: USAL CREEK

5.9 MI N JCT SR 1, Mendocino, CA

Built 1955 Load: 19.4 t ADT: 24

OLD TOLL RD/CR 108

Fair

Over: MC DOWELL CREEK

0.05 MI S SR 175, Mendocino, CA

Built 1969 Load: 19.8 t ADT: 60

OLD TOLL RD/CR 108

Fair

Over: COLEMAN CREEK

2.7 MI S S.R. 175, Mendocino, CA

Built 1940 Load: 19.8 t ADT: 72

PRIMROSE DR

Fair

Over: WILLITS CREEK

0.075 MI S LUPINE RD, Mendocino, CA

Built 1967 Load: 19.8 t ADT: 545

U.S. HIGHWAY 101

Fair

Over: ROBINSON CREEK

01-MEN-101-20.91, Mendocino, CA

Built 1940 Load: 20.4 t ADT: 7,350

STATE ROUTE 101

Fair

Over: NCRRA/NWP RR

01-MEN-020-35.63, Mendocino, CA

Built 1969 Load: 20.4 t ADT: 13,500

STATE PARK ROAD

Fair

Over: LITTLE RIVER

VAN DAMME STATE PARK, Mendocino, CA

Built 1995 Load: 20.4 t ADT: 100

BRANSCOMB ROAD

Fair

Over: REDWOOD CREEK

0.8 MI W INTX CR 320, Mendocino, CA

Built 1981 Load: 20.7 t ADT: 104

STATE ROUTE 1

Fair

Over: ALDER CREEK

01-MEN-001-22.73, Mendocino, CA

Built 1947 Load: 21.1 t ADT: 1,800

SHERWOOD RD

Fair

Over: SAM WATT CREEK

2.7 MI S US 101, Mendocino, CA

Built 1960 Load: 21.1 t ADT: 103

U.S. HIGHWAY 101

Fair

Over: SR 271 (@ PM 0.02)

01-MEN-101-R84.68, Mendocino, CA

Built 1967 Load: 21.4 t ADT: 6,150

E COMMERCIAL ST

Fair

Over: BROADDUS CREEK

0.3 MI E JCT SR 101, Mendocino, CA

Built 1966 Load: 21.4 t ADT: 1,000

GUNTLY RD (CR 260)

Fair

Over: COLD CREEK

0.20 MI N SH 20, Mendocino, CA

Built 1922 Load: 21.4 t ADT: 27

FOREST ROAD 320

Fair

Over: SOUTH FORK NOYO RIVER

PARLIN FORK CONSERVATION, Mendocino, CA

Built 1948 Load: 21.4 t ADT: 125

JACK OF HEARTS ROA

Fair

Over: JACK OF HEARTS CREEK

13.5 mi NE of DeHaven, Mendocino, CA

Built 1998 Load: 21.4 t ADT: 50

STATE ROUTE 128

Fair

Over: ORNBAUN CREEK

01-MEN-128-33.89, Mendocino, CA

Built 1939 Load: 21.7 t ADT: 2,050

HUTSELL RD (CR123)

Fair

Over: ROBINSON CREEK

0.1 MI SW SR 128, Mendocino, CA

Built 1960 Load: 21.7 t ADT: 139

ELKHORN ROAD

Fair

Over: RANCHERIA CREEK

4.5 MI SOUTH OF SR 128, Mendocino, CA

Built 1985 Load: 21.7 t ADT: 165

OLD RIVER ROAD

Fair

Over: PARSONS CREEK

7.0 MI S/O TALMAGE RD, Mendocino, CA

Built 1948 Load: 22.0 t ADT: 515

STATE ROUTE 162

Fair

Over: RODEO CREEK

01-MEN-162-10.08, Mendocino, CA

Built 1940 Load: 22.7 t ADT: 860

IRR SHERWOOD ROAD

Fair

Over: SHERWOOD CREEK

10.1 MI NE OF US 101, Mendocino, CA

Built 1947 Load: 22.7 t ADT: 139

ROAD B

Fair

Over: SALT HOLLOW CREEK

0.8 MI EAST OF EAST ROAD, Mendocino, CA

Built 1967 Load: 22.7 t ADT: 399

STATE ROUTE 271

Fair

Over: SOUTH FORK EEL RIVER

01-MEN-271-22.57, Mendocino, CA

Built 1917 Load: 23.0 t ADT: 95

STATE ROUTE 128

Fair

Over: INDIAN CREEK

01-MEN-128-23.34, Mendocino, CA

Built 1953 Load: 23.0 t ADT: 4,150

U.S. HIGHWAY 101

Fair

Over: RUSSIAN RIVER

01-MEN-101-9.24, Mendocino, CA

Built 1934 Load: 23.0 t ADT: 13,800

U.S. HIGHWAY 101

Fair

Over: SOUTH FORK EEL RIVER

01-MEN-101-R99.51, Mendocino, CA

Built 2009 Load: 23.0 t ADT: 6,100

STATE ROUTE 1

Fair

Over: ELK CREEK

01-MEN-001-31.35, Mendocino, CA

Built 1938 Load: 23.3 t ADT: 1,100

U.S. HIGHWAY 101

Fair

Over: OUTLET CRK & NCRA/NWP RR

01-MEN-101-57.67, Mendocino, CA

Built 1957 Load: 23.3 t ADT: 6,700

CEMETERY LANE

Fair

Over: GRIST CREEK

0.5 MI WEST OF SR 162, Mendocino, CA

Built 1960 Load: 23.3 t ADT: 72

CENTER VALLEY RD

Fair

Over: HAEHL CREEK

0.9 MI E SH 101, Mendocino, CA

Built 1953 Load: 23.7 t ADT: 1,166

STATE ROUTE 1

Fair

Over: JUG HANDLE CREEK

01-MEN-001-56.74, Mendocino, CA

Built 1938 Load: 24.0 t ADT: 10,350

CANYON RD

Fair

Over: BERRY CREEK

1.4 MI E JCT WITH CR 306, Mendocino, CA

Built 1960 Load: 24.0 t ADT: 408

U.S. HIGHWAY 101

Fair

Over: RATTLESNAKE CREEK

01-MEN-101-81.43, Mendocino, CA

Built 1931 Load: 24.3 t ADT: 6,200

STATE ROUTE 253

Fair

Over: SODA CREEK

01-MEN-253-3.47, Mendocino, CA

Built 1925 Load: 24.3 t ADT: 2,300

OAK ST

Fair

Over: ORRS CREEK

1 MI S GIBSON ST, Mendocino, CA

Built 1955 Load: 24.3 t ADT: 1,599

BRANSCOMB RD

Fair

Over: WINDEM CREEK

19.45 MI E FROM SH 1, Mendocino, CA

Built 1950 Load: 24.3 t ADT: 406

RUDDCK-CUNNINHM RD

Fair

Over: HILDRETH CREEK

0.35 MI S HOWELL CREEK RD, Mendocino, CA

Built 1955 Load: 24.3 t ADT: 619

TOMKI RD

Fair

Over: ROCKY CREEK

0.46 MI N CR 237, Mendocino, CA

Built 1933 Load: 24.3 t ADT: 512

TOMKI RD

Fair

Over: MOSSY CANYON CREEK

3.82 MI N CR 237, Mendocino, CA

Built 1960 Load: 24.3 t ADT: 393

POWER HOUSE RD

Fair

Over: BUSCH CREEK

0.3 MI N GIBSON LN, Mendocino, CA

Built 1948 Load: 24.3 t ADT: 440

SANFORD RANCH ROAD

Fair

Over: MC CLURE CREEK

0.5 MI N JCT WTH FAU 5222, Mendocino, CA

Built 1955 Load: 24.3 t ADT: 777

GEYSERS RD/CR 101A

Fair

Over: ASH CREEK

0.6 MI SE OF US HWY 101, Mendocino, CA

Built 1932 Load: 24.3 t ADT: 650

FOREST ROAD 600

Fair

Over: CASPAR CREEK

SOUTH OF JCT WITH RD 620, Mendocino, CA

Built 1972 Load: 24.3 t ADT: 10

STATE PARK ROAD

Fair

Over: LITTLE RIVER

VAN DAMME STATE PARK, Mendocino, CA

Built 1951 Load: 24.3 t ADT: 25

REEVES CANYON ROAD

Fair

Over: MILL CREEK

4.5 MI W US 101, Mendocino, CA

Built 1980 Load: 24.6 t ADT: 105

Read our methodology — how this data is sourced, computed, and verified.

Related

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Data sourced from official U.S. government datasets. See our methodology for details. Retrieved and formatted by PlainBridges Editorial